[media] Move CI cxd2099 driver to staging

This driver is abusing the kernel<=>userspace API, due to the lack of a
proper solution for it. A discussion were done at:
	http://www.mail-archive.com/linux-media@vger.kernel.org/msg22196.html
But there's not a solution for it yet. So, move the driver to staging, while
we don't have a final solution.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/ngene/Makefile

@@ -2,10 +2,13 @@
 # Makefile for the nGene device driver
 #
 
-ngene-objs := ngene-core.o ngene-i2c.o ngene-cards.o ngene-dvb.o cxd2099.o
+ngene-objs := ngene-core.o ngene-i2c.o ngene-cards.o ngene-dvb.o
 
 obj-$(CONFIG_DVB_NGENE) += ngene.o
 
 EXTRA_CFLAGS += -Idrivers/media/dvb/dvb-core/
 EXTRA_CFLAGS += -Idrivers/media/dvb/frontends/
 EXTRA_CFLAGS += -Idrivers/media/common/tuners/
+
+# For the staging CI driver cxd2099
+EXTRA_CFLAGS += -Idrivers/staging/cxd2099/

drivers/staging/Kconfig

@@ -51,6 +51,8 @@ source "drivers/staging/cx25821/Kconfig"
 
 source "drivers/staging/tm6000/Kconfig"
 
+source "drivers/staging/cxd2099/Kconfig"
+
 source "drivers/staging/dabusb/Kconfig"
 
 source "drivers/staging/se401/Kconfig"

drivers/staging/Makefile

@@ -8,6 +8,7 @@ obj-$(CONFIG_SLICOSS)		+= slicoss/
 obj-$(CONFIG_VIDEO_GO7007)	+= go7007/
 obj-$(CONFIG_VIDEO_CX25821)	+= cx25821/
 obj-$(CONFIG_VIDEO_TM6000)	+= tm6000/
+obj-$(CONFIG_DVB_CXD2099)	+= cxd2099/
 obj-$(CONFIG_USB_DABUSB)        += dabusb/
 obj-$(CONFIG_USB_VICAM)         += usbvideo/
 obj-$(CONFIG_USB_SE401)         += se401/

drivers/staging/cxd2099/Kconfig

@@ -0,0 +1,11 @@
+config DVB_CXD2099
+        tristate "CXD2099AR Common Interface driver"
+        depends on DVB_CORE && PCI && I2C && DVB_NGENE
+        ---help---
+          Support for the CI module found on cineS2 DVB-S2, supported by
+	  the Micronas PCIe device driver (ngene).
+
+	  For now, data is passed through '/dev/dvb/adapterX/sec0':
+	    - Encrypted data must be written to 'sec0'.
+	    - Decrypted data can be read from 'sec0'.
+	    - Setup the CAM using device 'ca0'.

drivers/staging/cxd2099/Makefile

@@ -0,0 +1,5 @@
+obj-$(CONFIG_DVB_CXD2099) += cxd2099.o
+
+EXTRA_CFLAGS += -Idrivers/media/dvb/dvb-core/
+EXTRA_CFLAGS += -Idrivers/media/dvb/frontends/
+EXTRA_CFLAGS += -Idrivers/media/common/tuners/

drivers/staging/cxd2099/TODO

@@ -0,0 +1,12 @@
+For now, data is passed through '/dev/dvb/adapterX/sec0':
+ - Encrypted data must be written to 'sec0'.
+ - Decrypted data can be read from 'sec0'.
+ - Setup the CAM using device 'ca0'.
+
+But this is wrong. There are some discussions about the proper way for
+doing it, as seen at:
+	http://www.mail-archive.com/linux-media@vger.kernel.org/msg22196.html
+
+While there's no proper fix for it, the driver should be kept in staging.
+
+Patches should be submitted to: linux-media@vger.kernel.org.

drivers/staging/cxd2099/cxd2099.h

@@ -27,6 +27,15 @@
 
 #include <dvb_ca_en50221.h>
 
+#if defined(CONFIG_DVB_CXD2099) || \
+        (defined(CONFIG_DVB_CXD2099_MODULE) && defined(MODULE))
 struct dvb_ca_en50221 *cxd2099_attach(u8 adr, void *priv, struct i2c_adapter *i2c);
+#else
+struct dvb_ca_en50221 *cxd2099_attach(u8 adr, void *priv, struct i2c_adapter *i2c)
+{
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+	return NULL;
+}
+#endif
 
 #endif